Highly-active charcoal



' Patented Aug. 25, 1925.

UNIT so STATES [PATEN men nnma 535mm, or nnvnnnusnn, um mason-mum am;

assronon "ro rAnBEnrAsnmnn-von'u; ram-1m. BAYER annoo.', or xu'smr, man coLoonmon-rxn-nnnm, 011mm,

meaty-norm caanoom 3 no Draining. Application mm mm is, my. Serhtlo. 023,1.

To all/whom it may concern." a nace.- The pieces of charcoal obtained show a Be it known that I, Hsmz THI NEMANN', a good absorption capacity and great ri'gidg a citizen of Germany, residing at Leuerkuity. 7 1 1 sen, near Cologne-on-tlie-Rliine, in the State The drying and calcinin of the threads i j 5 of Prussia, Germany; have invented new and can be combined in one an the sameoper-"lo 4., useful Improvements in. a Highly Active ation by using a rotary gas heated furnace.

' I Charcoal, of which the following is a speci- If care is" taken that the combustion gases li fication. v p are free from oxygen and that the heating 3 I have found that a highly active lia1'- temperature' does not exceed 700 there ll 1-:

coal distinguished by high resistivity to tactically no losslof material due the ooni- 4] pressure and disintegration which ensule ustion. In this manner a highly active a minimum of wastage, can be obtained by charcoal of the desired grain size and with r, preparing a homogeneous plastic mass from high r1 'dity can be obtained in a continual finely ground peat and impregnating 'maoperation. l5. terials such as concentrated solutions of in- I claim:- V 1-80 a v orga'nic' salts or acids which can 'be easily 1. Process for' preparing highly active washed out after calcining, extruding the charcoal of great resistivity to pressure and I paste into single thread-like products or the disintegration which" comprises preparing 4 p lil te as for instance through a thread"prcss a aste' from the finely ground peat and. I or into briquettes as for instance through so ution containing an inorganic acid radical Q a 1" f i a briquetting machine, and subjecting extruding the'paste in' the form of com act -'I these firm structures, to acalciniug process. bodies, and drying and calcining the The charcoal obtained then W3Sll8d as 2, As a new product' of lnghly f i 1 1 usual, dried. and sieved. It is noted that charcoal in the form of grains of high '1' one can'control to a certain extent the grain rigidity" and absorption capacity substan Q .5 a size of the charcoal obtained, byaltering the tially identical with that which may be pre- -size of the dies of the press. pared by the hereindescribed process which As an example, 10 parts by'weight of comprises forming a paste of finely ground i I finely round peat are mixed with 15' parts" .peatand' a solution containing an Inorganic e by weight of a 50% ironchlorid solution ,ucid radical, forming the aste into com act in a kneading machine and the resulting bodies, and dryin and caYcin' the g paste is extruded through a thread; press In testimony wereof I have ereunto set using -dies of 5 mm.'diamete r. "The mass my hand. f f 4 1 obtained is put through a rotary -furnace Y g and after drying is calcined in amuflie fur v HEINZ- THIENEMANK.. 

